From ab38c3b7c3472a6626aceb12fc2a23828152daf3 Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Sat, 13 Jul 2019 14:03:45 +0200
Subject: drm/sun4i: sun8i_csc: Simplify register writes
Git-commit: ab38c3b7c3472a6626aceb12fc2a23828152daf3
Patch-mainline: v5.4-rc1
References: bsc#1152472
It turns out addition of 0x200 to constant parts (+0.5) is not really
necessary. Besides, we can consider that before and fix value in CSC
matrix.
This simplifies register writes quiet a bit.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190713120346.30349-3-jernej.skrabec@siol.net
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/sun4i/sun8i_csc.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.c b/drivers/gpu/drm/sun4i/sun8i_csc.c
index 00706a494c89..d0dd3edf1e2e 100644
--- a/drivers/gpu/drm/sun4i/sun8i_csc.c
+++ b/drivers/gpu/drm/sun4i/sun8i_csc.c
@@ -69,7 +69,7 @@ static void sun8i_csc_set_coefficients(struct regmap *map, u32 base,
enum sun8i_csc_mode mode)
{
const u32 *table;
- int i, data;
+ u32 base_reg;
switch (mode) {
case SUN8I_CSC_MODE_YUV2RGB:
@@ -83,13 +83,8 @@ static void sun8i_csc_set_coefficients(struct regmap *map, u32 base,
return;
}
- for (i = 0; i < 12; i++) {
- data = table[i];
- /* For some reason, 0x200 must be added to constant parts */
- if (((i + 1) & 3) == 0)
- data += 0x200;
- regmap_write(map, SUN8I_CSC_COEFF(base, i), data);
- }
+ base_reg = SUN8I_CSC_COEFF(base, 0);
+ regmap_bulk_write(map, base_reg, table, 12);
}
static void sun8i_de3_ccsc_set_coefficients(struct regmap *map, int layer,
--
2.28.0